Question

state and explain lami's theorem

Answer 1

Lami's theorem is an equation relating the magnitudes of three coplanar, concurrent and non-collinear forces, which keeps an object in static equilibrium, with the angles directly opposite to the corresponding forces. A,B,C
http://en.wikipedia.org/wiki/Lami's_theorem

Lami’s theorem states that “if three coplanar forces are In equilibrium, then each force is proportional to the sine of the angle between the other two forces”.
http://way2science.com/lamis-theorem/

Hope that helps... I suck at Physics so I just gave you my sources, Good luck [: